Appeal No. 1997-2284
Application 08/278,107
carbide foam of an element selected from a recited Markush
group, which is useful as a catalyst or catalyst support.
Claim 1 is illustrative and reads as follows:
1. Carbide foam of an element selected from the group
consisting of Si, Mo, W, Re, V, Nb, Ta, Ti, Cr, Ni, rare earth
elements and actinide elements, for use as a catalyst or
catalyst support having open pores including macropores of a
pore diameter between 50 and 500 Fm and mesopores of a pore
diameter between 30 and 50 Angstroms in the form of a three-
dimensional network of interconnected cages, a density between
0.03 and 0.1 g/cm , a BET specific surface area between 20 and3
100 M /g, no more than 0.1% by weight residual said element2
and carbide crystallites of a size between 40 and 400
Angstroms.
THE REFERENCE
Welsh et al. (Welsh) 4,536,358 Aug. 20,
1985
THE REJECTION
Claims 1 and 2 stand rejected under 35 U.S.C. § 103 as
being unpatentable over Welsh taken with appellants’ admitted
prior art.
OPINION
We have carefully considered all of the arguments
advanced by appellants and the examiner and agree with
appellants that the aforementioned rejection is not well
2
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